Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dbcf47c98957a22…

MALICIOUS

PDF

77.4 KB Created: 2021-03-29 06:48:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8cbba31b67d507afbc403c76bf04027d SHA-1: 54e7927c2a4dfc79211b28b8161af501592e7358 SHA-256: 1dbcf47c98957a22283812a7a44f17fc4ff5098d110370505d7ca66e2ded19ae
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://vilenefex.ru/strik?utm_term=what+are+the+specs+of+my+pc PDF link annotation
    • http://pakawuwujawo.getenjoyment.net/change_adjectives_into_adverbs_exercises.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369916/normal_5fff53c65136b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495393/normal_5fdfc1d3cb3e8.pdfIn PDF document text
    • http://riwuvodobopexu.mywebcommunity.org/pdf_version_of_because_the_internet_screenplay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374185/normal_605f63b93c793.pdfIn PDF document text
    • http://mpvideo.org/dihybrid_test_crossa8do1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388293/normal_603171f1de52b.pdfIn PDF document text
    • http://zarewubizeno.mywebcommunity.org/3154035276.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410204/normal_601d3624de8dc.pdfIn PDF document text
    • http://mini-camera-super.club/93079408396vst4t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478687/normal_5fdd027546512.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453754/normal_6001040bd44ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463824/normal_6059c3da2984a.pdfIn PDF document text
    • http://akmurzina.com/automatic_code_search_ge_universal_remotexnqkf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427295/normal_5ffba6bc2df21.pdfIn PDF document text
    • http://ludesajezopaju.medianewsonline.com/feworimedenokativomet.pdfIn PDF document text
    • http://apple-fruit.space/dream_interpretation_red_applesooa82.pdfIn PDF document text
    • http://luminar3-download.xyz/dexotiwunijevegaf3pv9y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/nefafoda.pdfIn PDF document text
    • http://vawanumezal.onlinewebshop.net/xevumofil.pdfIn PDF document text
    • http://titugol.atwebpages.com/sahih_al_bukhari_hadith_in_english.pdfIn PDF document text
    • http://bolirazebaf.myartsonline.com/customary_law_in_zambia.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/bienvenue_au_qubec_en_franais.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/feriados_puerto_rico_2020_oatrh.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF00 5336 bytes
SHA-256: c1311fd042cb9dc3f18efac05c635cccb965fb28b918e1fb9a2b1630491c884e
font_01_sfnt_off00010112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10112 11204 bytes
SHA-256: f48668d60a7dd5cbc46fb84559454afd88949edc48832ea0f45aebc7f6e8cea1

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